| A - Class "A" | K - Nonvoting (common) | U - Units |
| B - Class "B" | L - Miscellaneous | V - Pending issue and distribution |
| C - Continuance - or Nasdaq exception | M - 4th class - preferred shares | W - Warrants |
| D - New issue | N - 3rd class - preferred shares | X - Mutual fund |
| E - Delinquent in filings with the SEC | O - 2nd class - preferred shares | Y - American Depositary Receipt (ADR) |
| F - Foreign | P - 1st class preferred shares | Z - Miscellaneous situations |
| G - First convertible bond | Q - In bankruptcy | Special codes |
| H - 2nd convertible bond | R - Rights | .PK - Trades over the counter |
| I - 3rd convertible bond | S - Shares of beneficial interest | SC - Nasdaq Small Cap |
| J - Voting share - special | T - With warrants or rights | NM - Nasdaq National Market |